Paper-feeding means for stenographic machines



Feb. 2 1926. 1,571,522

' M. GRANDJEAN PAPER FEEDING MEANS FOR STEFTOGRAPHIG MACHINES Filed Ja n. a. 1923 2 Sheets-Sheet 1 Feb. 2,1926. 1,571,522

M. GRANDJEAN PAPER FEEDING MEANS FOR STENOGRAPHIC MACHINES Filed Jan. 6, 1923 r 2 SleBts-ShGBt 2 m\\\\\\\\\\\\\\\\\\\\\\\wA Fatented Feb. 2, 19.26%.

UNITED MARC GEANDJEAN, 01F PARIS, FRANCE.

PAPER-FEEDING FQE STETNGGRAPHIC MACHINES.

Application filed January 8, 1923.

To all whom it may concern:

Be it known that 1, MAno G'RANDJEAN, a citizen of the Republic of France, and residing at Paris, Seine Department, Bourse du Commerce, Rue du Louvre, in the Republic of France, have invented certain new and useful Improvements in Paper- Feeding Means for Stenographic Machines, of which the following is specification.

The present invention has for its object the combination with a stenographic machine ot a control for the ribbon paper spool whereby the paper strip can be rearwardly moved by simply drawing upon the said strip without operating any releasing de vice, and the arm carrying the said spool can be swung entirely against the top of the machine in order to reduce the size of the same and to facilitate the transportation.

For this purpose the said spool is secured to a disk provided with pawls actuating a ratchet wheel secured to a pinion which engages a quadrant, the latter being pivoted at a point near the end of the said arm and connected by a link and bell crank movement with a tinger controlled by a bar which is actuated by means of the printing keys. In this manner the release is eitected automatically, because the quadrant is tree to descend and to become disengaged from the pinion when the strip is drawn backward; the release becomes feasible inasmuch as the controlling finger is now separated from the bar serving to actuate the same.

Furthermore, one of the pivot axles of the drive for the said quadrant coincides substantially with the pivoting axis of the arm carrying the spool, so that the latter is free to swing through any desired angle without hindrance from the said drive.

The appended drawings shew by way of example a form of the device according to the invention.

Fig. 1 is a side view of the control and of the arm carrying the spool, partially in section and in the inoperative position.

Fig. 2 is a like view with the quadrant disengaged.

1 indicates the machine frame whereupon is pivoted the arm 2 carrying the spool, by means of the axle 3. A cross bar 01' actuating member 1 is moved upwardly at each operation of a key or set of keys, and said her actuates a finger 5 pivoted at 6 to the in fra e and conne ted by a l nk Serial No. 611,092.

7 with a bell crank 8 which is pivoted to the axle 9 and is connected, by a link 10 with a quadrant 11 pivoted at 12 to the arm 2. A. reaction spring 13 is disposed between the end 01'' the arm 2 and the point at which said link is pivoted to the quadrant, and moves the quadrant towards the position shown in Fig. 1 until the finger 5 bears upon the bar 4.

The ribbon paper spool is secured to a disk 14 provided with the pawls 15 coopcrating with a ratchet wheel 16 attached to a gear wheel 17 which engages the quadrant 11. The direction of the ratchet device is such that the said quadrant is enabled to descend without rotating the spool, but when rising it will cause the spool to turn. In these conditions, each time that a character is printed, the finger 5 will be raised, thus drawing upon the link 10 and causing the quadrant to descend; in this movement the gear wheel 17 rotates in the counterclockwise sense, Fig. 1, and the ratchet wheel 16 slides upon the pawls with out actuating the said spool. When the printing key is released, the quadrant now rises under the effect of the spring 13, and the gear wheel 17 is rotated in the clockwise sense, thus actuating the disk 14 and the attached spool.

Should it be desired to read the portion of the strip which has just been printed, it is simply necessary to draw upon the same in such manner as to actuate the disk 1 1-, wheel 16, gear wheel 17 and quadrant 11; the latter is enabled to descend because its motion corresponds to theraising of the finger 5 which is disengaged from the bar 4, Fig. 2. Upon again releasing the paper strip, the spring 13 will now act, and the gear engagement takes place as before.

The axle 3, Fig. 1, substantially coincides with the pivoting point of the link 10 upon the bell crank 8, so that the arm 2 can be swung according to the arrow until it rests upon the top of the machine.

I claim:

In a stenographic machine employing a paper band, the combination of a frame, an actuating member, a winding device for the said paper band, controlling means for the said winding device comprising a disc secured to the said winding device, pawls disposed upon said disc, a ratchet wheel driven by the said pawls, a pinion secured to the said ratchet wheel, an arm carry ing the said winding device and pivoted to the said machine frame, a toothed sector engaging the said pinion, a spring adapted to rotate the said disc by the action of the toothed sector, of the pinion and of the pawls and adapted also to bring again in position the said toothed sector When the direction of rotation of the said Winding device is reversed in order to draw the paper band to the rear and means for imparting the motion of the actuating member to the said toothed sector, said means comprising a pivot joint Whose axle is situated on the axis of the pivot connecting the said arm With the machine frame.

In testimony that I claim the foregoing as my invention, I have signed my name.

MARC GRANDJEAN. 

